Close Intimacy between PtIn Clusters and Zeolite Channels for Ultrastability toward Propane Dehydrogenation

• DOI: 10.1021/acs.nanolett.4c01131
• Publication Date: 2024-06-05T17:34:05Z
• Authors: Lei Luo; Tao Zhou; Wenjie Li; Xu Li; Han Yan; Weiye Chen; Qiang Xu; Sunpei Hu; Chao Ma; Jun Bao; Chih-Wen Pao; Zhandong Wang; Hongliang Li; Xinlong Ma; Laihao Luo; Jie Zeng
• Keywords: Propane; Propene; Space velocity

Propane dehydrogenation (PDH) serves as a pivotal intentional technique to produce propylene. The stability of PDH catalysts is generally restricted by the readsorption propylene which can subsequently undergo side reactions for coke formation. Herein, we demonstrate an ultrastable catalyst encapsulating PtIn clusters within silicalite-1 efficient promoter olefin desorption. mean lifetime PtIn@S-1 (S-1, silicalite-1) was calculated 37317 h with high selectivity >97% at 580 °C weight hourly space velocity (WHSV) 4.7 h–1. With ultrahigh WHSV 1128 h–1, pushed away from equilibrium conversion 13.3%, substantially outperformed other reported in terms (32058 h), reaction rates (3.42 molpropylene gcat–1 h–1 and 341.90 gPt–1 h–1), total turnover number (14387.30 kgpropylene gcat–1). developed likely lead way scalable applications.